plasma-framework/windoweffects.cpp

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/*
* Copyright 2009 Marco Martin <notmart@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "windoweffects.h"
#include <QVarLengthArray>
#include <kwindowsystem.h>
#ifdef Q_WS_X11
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <QX11Info>
#endif
namespace Plasma
{
namespace WindowEffects
{
//FIXME: check if this works for any atom?
bool isEffectAvailable(Effect effect)
{
if (!KWindowSystem::compositingActive()) {
return false;
}
#ifdef Q_WS_X11
QString effectName;
switch (effect) {
case Slide:
effectName = "_KDE_SLIDE";
break;
case WindowPreview:
effectName = "_KDE_WINDOW_PREVIEW";
break;
case PresentWindows:
effectName = "_KDE_PRESENT_WINDOWS_DESKTOP";
break;
case PresentWindowsGroup:
effectName = "_KDE_PRESENT_WINDOWS_GROUP";
break;
case HighlightWindows:
effectName = "_KDE_WINDOW_HIGHLIGHT";
break;
case OverrideShadow:
effectName = "_KDE_SHADOW_OVERRIDE";
break;
case BlurBehind:
effectName = "_KDE_NET_WM_BLUR_BEHIND_REGION";
break;
default:
return false;
}
// hackish way to find out if KWin has the effect enabled,
// TODO provide proper support
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, effectName.toLatin1(), False);
int cnt;
Atom *list = XListProperties(dpy, DefaultRootWindow(dpy), &cnt);
if (list != NULL) {
bool ret = (qFind(list, list + cnt, atom) != list + cnt);
XFree(list);
return ret;
}
#endif
return false;
}
void slideWindow(WId id, Plasma::Location location, int offset)
{
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom( dpy, "_KDE_SLIDE", False );
QVarLengthArray<long, 1024> data(2);
data[0] = offset;
switch (location) {
case LeftEdge:
data[1] = 0;
break;
case TopEdge:
data[1] = 1;
break;
case RightEdge:
data[1] = 2;
break;
case BottomEdge:
data[1] = 3;
default:
break;
}
if (location == Desktop || location == Floating) {
XDeleteProperty(dpy, id, atom);
} else {
XChangeProperty(dpy, id, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
}
#endif
}
void slideWindow(QWidget *widget, Plasma::Location location)
{
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom( dpy, "_KDE_SLIDE", False );
QVarLengthArray<long, 1024> data(2);
switch (location) {
case LeftEdge:
data[0] = widget->geometry().left();
data[1] = 0;
break;
case TopEdge:
data[0] = widget->geometry().top();
data[1] = 1;
break;
case RightEdge:
data[0] = widget->geometry().right();
data[1] = 2;
break;
case BottomEdge:
data[0] = widget->geometry().bottom();
data[1] = 3;
default:
break;
}
if (location == Desktop || location == Floating) {
XDeleteProperty(dpy, widget->effectiveWinId(), atom);
} else {
XChangeProperty(dpy, widget->effectiveWinId(), atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
}
#endif
}
QList<QSize> windowSizes(const QList<WId> &ids)
{
QList<QSize> windowSizes;
foreach (WId id, ids) {
#ifdef Q_WS_X11
if (id > 0) {
KWindowInfo info = KWindowSystem::windowInfo(id, NET::WMGeometry|NET::WMFrameExtents);
windowSizes.append(info.frameGeometry().size());
} else {
windowSizes.append(QSize());
}
#else
windowSizes.append(QSize());
#endif
}
return windowSizes;
}
void showWindowThumbnails(WId parent, const QList<WId> &windows, const QList<QRect> &rects)
{
if (windows.size() != rects.size()) {
return;
}
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
if (windows.isEmpty()) {
XDeleteProperty(dpy, parent, atom);
return;
}
int numWindows = windows.size();
QVarLengthArray<long, 1024> data(1 + (6 * numWindows));
data[0] = numWindows;
QList<WId>::const_iterator windowsIt;
QList<QRect>::const_iterator rectsIt = rects.constBegin();
int i = 0;
for (windowsIt = windows.constBegin(); windowsIt != windows.constEnd(); ++windowsIt) {
const int start = (i * 6) + 1;
const QRect thumbnailRect = (*rectsIt);
data[start] = 5;
data[start+1] = (*windowsIt);
data[start+2] = thumbnailRect.x();
data[start+3] = thumbnailRect.y();
data[start+4] = thumbnailRect.width();
data[start+5] = thumbnailRect.height();
++rectsIt;
++i;
}
XChangeProperty(dpy, parent, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
#endif
}
void presentWindows(WId controller, const QList<WId> &ids)
{
#ifdef Q_WS_X11
const int numWindows = ids.count();
QVarLengthArray<long, 32> data(numWindows);
int actualCount = 0;
for (int i = 0; i < numWindows; ++i) {
data[i] = ids.at(i);
++actualCount;
}
if (actualCount != numWindows) {
data.resize(actualCount);
}
if (!data.isEmpty()) {
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_PRESENT_WINDOWS_GROUP", False);
XChangeProperty(dpy, controller, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
}
#endif
}
void presentWindows(WId controller, int desktop)
{
#ifdef Q_WS_X11
QVarLengthArray<long, 32> data(1);
data[0] = desktop;
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_PRESENT_WINDOWS_DESKTOP", False);
XChangeProperty(dpy, controller, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
#endif
}
void highlightWindows(WId controller, const QList<WId> &ids)
{
#ifdef Q_WS_X11
const int numWindows = ids.count();
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_WINDOW_HIGHLIGHT", False);
if (numWindows == 0) {
Atom atom = XInternAtom(dpy, "_KDE_WINDOW_HIGHLIGHT", False);
XDeleteProperty(dpy, controller, atom);
}
QVarLengthArray<long, 32> data(numWindows);
int actualCount = 0;
for (int i = 0; i < numWindows; ++i) {
data[i] = ids.at(i);
++actualCount;
}
if (actualCount != numWindows) {
data.resize(actualCount);
}
if (!data.isEmpty()) {
XChangeProperty(dpy, controller, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
}
#endif
}
void overrideShadow(WId window, bool override)
{
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom( dpy, "_KDE_SHADOW_OVERRIDE", False );
QVarLengthArray<long, 1024> data(1);
data[0] = 1;
if (!override) {
XDeleteProperty(dpy, window, atom);
} else {
XChangeProperty(dpy, window, atom, atom, 32, PropModeReplace,
reinterpret_cast<unsigned char *>(data.data()), data.size());
}
#endif
}
void enableBlurBehind(WId window, bool enable, const QRegion &region)
{
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_NET_WM_BLUR_BEHIND_REGION", False);
if (enable) {
QVector<QRect> rects = region.rects();
QVector<quint32> data;
for (int i = 0; i < rects.count(); i++) {
const QRect r = rects[i];
data << r.x() << r.y() << r.width() << r.height();
}
XChangeProperty(dpy, window, atom, XA_CARDINAL, 32, PropModeReplace,
reinterpret_cast<const unsigned char *>(data.constData()), data.size());
} else {
XDeleteProperty(dpy, window, atom);
}
#endif
}
}
}